Their immune systems were not allowed to develop via the human medications they are given.

It was several decades before scientists thought of designing systems that could work anywhere.

It was equipped with digital systems that unerringly corrected for pilot error as well as any buffeting caused by bad weather.

High pressure systems are steered by upper-level winds much the same way low pressure systems are steered.

British Dictionary definitions for systems

system

/ˈsɪstəm/

noun

1.

a group or combination of interrelated, interdependent, or interacting elements forming a collective entity; a methodical or coordinated assemblage of parts, facts, concepts, etc: a system of currency, the Copernican system

2.

any scheme of classification or arrangement: a chronological system

3.

a network of communications, transportation, or distribution

4.

a method or complex of methods: he has a perfect system at roulette

5.

orderliness; an ordered manner

6.

(often capital) the system, society seen as an environment exploiting, restricting, and repressing individuals

7.

an organism considered as a functioning entity

8.

any of various bodily parts or structures that are anatomically or physiologically related: the digestive system

9.

one's physiological or psychological constitution: get it out of your system

10.

any assembly of electronic, electrical, or mechanical components with interdependent functions, usually forming a self-contained unit: a brake system

11.

a group of celestial bodies that are associated as a result of natural laws, esp gravitational attraction: the solar system

12.

(chem) a sample of matter in which there are one or more substances in one or more phases See also phase rule

13.

a point of view or doctrine used to interpret a branch of knowledge

14.

(mineralogy) one of a group of divisions into which crystals may be placed on the basis of the lengths and inclinations of their axes Also called crystal system

15.

(geology) a stratigraphical unit for the rock strata formed during a period of geological time. It can be subdivided into series

Derived Forms

systemless, adjective

Word Origin

C17: from French système, from Late Latin systēma, from Greek sustēma, from syn- + histanai to cause to stand

system

n.

1610s, "the whole creation, the universe," from Late Latin systema "an arrangement, system," from Greek systema "organized whole, body," from syn- "together" (see syn-) + root of histanai "cause to stand" from PIE root *sta- "to stand" (see stet). Meaning "set of correlated principles, facts, ideas, etc." first recorded 1630s. Meaning "animal body as an organized whole, sum of the vital processes in an organism" is recorded from 1680s; hence figurative phrase to get (something) out of one's system (1900). Computer sense of "group of related programs" is recorded from 1963. All systems go (1962) is from U.S. space program.